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/*
Copyright (C) 1993, 1994, 1995 Free Software Foundation
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
The GNU Hurd is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the GNU Hurd; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Written by Michael I. Bushnell. */
#include "priv.h"
#include "io_S.h"
#include <string.h>
kern_return_t
trivfs_S_io_duplicate (struct trivfs_protid *cred,
mach_port_t reply,
mach_msg_type_name_t replytype,
mach_port_t *newport,
mach_msg_type_name_t *newporttype)
{
struct trivfs_protid *newcred;
if (!cred)
return EOPNOTSUPP;
newcred = ports_allocate_port (cred->po->cntl->protid_bucket,
sizeof (struct trivfs_protid),
cred->po->cntl->protid_class);
newcred->realnode = cred->realnode;
newcred->isroot = cred->isroot;
mutex_lock (&cred->po->cntl->lock);
newcred->po = cred->po;
newcred->po->refcnt++;
mutex_unlock (&cred->po->cntl->lock);
newcred->uids = malloc (cred->nuids * sizeof (uid_t));
newcred->gids = malloc (cred->ngids * sizeof (gid_t));
bcopy (cred->uids, newcred->uids, cred->nuids * sizeof (uid_t));
bcopy (cred->gids, newcred->gids, cred->ngids * sizeof (uid_t));
newcred->nuids = cred->nuids;
newcred->ngids = cred->ngids;
mach_port_mod_refs (mach_task_self (), newcred->realnode,
MACH_PORT_RIGHT_SEND, 1);
newcred->hook = cred->hook;
if (trivfs_protid_create_hook)
(*trivfs_protid_create_hook) (newcred);
*newport = ports_get_right (newcred);
*newporttype = MACH_MSG_TYPE_MAKE_SEND;
return 0;
}
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